package com.demo.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.conditions.query.LambdaQueryChainWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.demo.reggie.comm.R;
import com.demo.reggie.entity.Employee;
import com.demo.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.concurrent.TimeUnit;


/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 员工登录
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(@RequestBody Employee employee) {
        // 1. 密码md5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());


        // 2.根据username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        // 3.查询失败
        if (emp == null) {
            return R.error("登录失败");
        }

        // 4.密码比对
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        // 5.查看状态
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        // 6.登录成功, 存入session
        redisTemplate.opsForValue().set("employee", emp.getId(), 7, TimeUnit.DAYS);
        return R.success(emp);
    }


    /**
     * 退出登录
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee) {
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工信息查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page<Employee>> page(Integer page, Integer pageSize,String name) {
        // 构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        // 构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        // 添加一个过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        // 添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        // 执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee) {
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 根据Id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应信息");
    }

}
